Help with the lose of Live stock

[bigzman]

TBRC need help

I have a 56 gallon Freshwater planted tank with 3 8" discus and 7 neon tetras, shrimps and otto cats. I have had this tank for over 3 years without any issues. Today I got a call from my daughter that all the fish were trying to jump out of tank and moving fast and in circles. 30 minutes later when I got home I find only 1 neon swimming crazy. All others turned pale and died. I have never seen anything like this and want to make sure that this does not happen to my 210 gallon reef. All was well this morning when I left to work. Any suggestions as to what could cause such a rapid decline? I checked parameters and all levels are good. I did a WC about two weeks ago. I use Seachem matrix and phosban in a Rena canister filter that is rated upto 175 gallon. I was worried what caused this might be air born like Carbon monoxide / gas leak but my two alarms would have gone off. On my reef tank I have GFO reactor filled with Carbon.

Any help finding out what could have caused this and prevent this from happening to my reef would be greatly appreciated.

Thx,
Z

 

[aguila88psi]

Sorry to hear about your loss, any household cleaners or air born fresheners used around the tank recently?

 

[Milfordguy]

Any possibility of electricity in the tank?

 

[bigzman]

I touched water. No current/jolts. That is what I taught as well.

 

[bigzman]

Thanks Pedro. Not that I am aware off. Family knows not to use sprays and cleaning products around tanks. Good point I will as when I get home again.

 

[installman]

Are you running a co2 injector in that tank for the plants? I have heard of them going bad and causing fish kills.

 

[bigzman]

Installman,

I do not use CO2 and don't use airpumps. I rarely ever add ferts. Although I am sad for my lose I am really worried about the reef. Going to change carbon when I get home and add fresh carbon.

Thx
z

 

[CichlidMan@<3]

Any nasty algae blooms or anything along those lines?

 

[bigzman]

CichlidMan@<3, No algea blooms. After hours of watching reef tank nothing seems to be effected. I drained fresh water tank and did a 50% water change. The two surviving fish seem to have stopped swiming crazy. I still have not added carbon to filter.

 

[installman]

Glad to hear your reef is ok.

 

[anbosu]

Did any of your water circulation or air pumps stop working on the FW tank?

Have you added any fish recently?

That is really bizarre, sorry about the fish man.

 

[TampaSnooker]

Could a sulphur pocket in the substrate have been disturbed?
There's only a few things that could take a tank down so quickly - no/low oxygen, chemical contamination and maybe electricity. Check the heater for moisture inside if it's a submersible.

 

[MrHarvard]

Has your water gotten cloudy at all in the past week?

 

[bigzman]

No Cloudy water. Heater is working. I will buy grounding probe as well.